?3 Referring specially to the results of the special work against malaria Gorgas says: "It has reduced the deaths from malaria in the total population from a maximum of 16·21 per 1,000 in July 1906 to 2·58 per 1,000 in December 1909. Among employees it has reduced the deaths from malaria from a maximum of 11·59 per 1,000 in November 1906 to 1·23 per 1,000 in December 1909. The admission rate among employees has fallen from a maximum of 12·63 per 1,000 in July 1906 to 1·91 per 1,000 in December 1909. The admission rate per thousand among employees has been as follows:-1904-125; 1905-514; 1906-821; 1907-424; 1908-282; 1909-215." Mr. J. A. LePrince, C.E.A.M., Chief Sanitary Inspector, Panama Canal Zone, states that:- "From the 31st October 1909 to 1st January 1910 during the period of heaviest rainfall, only 3·26 per cent. of the force (labourers) were hospital malaria cases." 441. Wilhelmshaven.-It is recorded that in 1896 during the construction of the harbour at Wilhelmshaven, a fearful epidemic of malaria occurred, which affected both the workmen, the crews belonging to the shipping and the residents in the vicinity. At this time little was known of the possibility of preventing malaria. But during the recent enlargement of the harbour works, special precautions were adopted from the commence- ment and as a result there has been no outbreak of the disease. 442. The result of the preventive work that has been carried out at Panama and Wilhelmshaven shows that even among aggregations of labourers engaged upon construc- tion work in malarious areas, the adoption of adequate precautions is sufficient to neutralize the risk of epidemic outbreaks of malaria, to which these temporary collections of labourers are specially liable.